Refrigerating apparatus



Nov. 5, 1935. H. WALLACE REFRIGERATING APPARATUS 5 Sheets-Sheet 1 FiledJan. 31, 1929 III Nov. 5, 1935. H, WALLACE REFRIGERAT-ING APPARATUSFiled Jan. 31, 1929 3 Sheets-Sheet 2 CCCC LCCCC Nov. 5, 1935. H. WALLACEREFRIGERATING APPARATUS Filed Jan. 31, 1929 3 Sheets-Sheet 3 PatentedNov. 5, 1935 NT OFFICE BEFBIGERATING APPARATUS Hugh Wallace, Dayton,Ohio, assignor, by mesne assignments, to General Motors Corporation,

a corporation of Delaware I Application January'31, 1929, Serial No.336,451

. 2 Claims.

This invention relates to refrigerating apparatus and more particularlytoa cabinet and to I a method of its manufacture.

net which mayprovide an improved cabinet.

Another object of this invention is to provide an improved method ofmanufacturing refrigerator cabinets.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings, wherein a preferred form of the present invention is clearlyshown.

In the drawings:

Fig. 1 is a vertical'cross-sectional view taken transversely to acabinet embodying features .of this invention;

Fig. 2 is a vertical cross-sectional view taken along the line 22 ofFig. 1;

:Fig. 3 is a horizontal cross-sectional view taken along theline 3-3 ofFig. 1;

Fig. 4 is an elevational view of a cabinet partially assembled;

Fig. 5 is an,enlarged cross-sectional view a portion of Fig. 3;.and IFig. 6 is a view somewhat, similar to Fig. 5 of a slightly modified formof this invention.

- A cabinet embodying features of this invention is generally designatedas 20. It inayv include a refrigerated food compartment 2| and, ifdesired, a machinery compartment designated at 22a. If the cabinet is tobe mechanically cooled, it may be provided with a cooling unit generallydesignated as 23 which may, if desired, be a float controlled evaporatorand refrigerating system of the typelshown in the patent to R. G.Osborn, No. 1,556,708,'patented October 13, 1925. surrounded by an apronor shield generally designated as 24 which may be of the type disclosed.in' the application of Francis E. Stevenson, Se-

rial No. 257,999,-filed February 29, 1928. The

construction of the outer casing may, if desired, comprise a series ofpanels somewhat of the character disclosed in the joint application ofHenry P. Braeutigam and William C. Holbroolr, Serial No. 257,989, filedFebruary 29, 1928.

.In manufacturing thiscabinet a framework, generally designated as 25,may be provided.

If desired, the cooling unit-may be 1 irons 21, upper horizontal cornerangle irons 28, lower corner angle irons 29. and, if desired,intermediate horizontal angle irons 30. If desired, some or all of theangle irons may be braced: by braces'3l placed along the sidesand rear.The food compartment may comprise a boxlike lining 22 having a dooropening 33. This lining may have at least part of the insulationattached thereto before it is placed on the framework. For this purpose,the lining 22 may have .the edge along the door opening 33 secured to anon-conducting door'jamb 32 made of wood, for instance. Some orall ofthe outer sides of the lining 22 may have insulation placed or securedthereon. For thispurpose slabs 34' of rock-cork or rock-board may becemented, if desired, to the 'sides of the lining 22 bysome bituminouscement, -such as hydrolene, applied in a heated condition and the outersurface of the insulation may be rendered substantially hermetic by someconstruction which renders it air-tight. For this purpose the outersurface may have an outer hermetic coat,,for instance, a metal air-tightenclosure 35.. A satisfactory structure may include an outer box-likemetal cover 35 placed around the insulation members 34 and securedhermetically along the edge of the door jamb 32. In order to insure thatthe construction is hermetic a bituminous ce nent, such as hydrolene, 36may be inserted between thedoor jamb and the insulation either duringthe placing of the insulation on the lining 22 or after'the outer casing35 has been placed .over the insulation by providing suitable" openingsin the casing .35 and by pouring the bituminous cement into the space.Under some conditions, the bituminous cement between the insulationmembers 34 and the lining 22 may be omitted. After the lining -'has beenthus treated and rendered into a unitary'unit, it'may be secured to theframework 25 in any desired manner. A satisfactory manner is shown inFig.4 wherethe assembled lining unit, generally designated as 31, may beinserted from the top or from the bottom of the framework, and when inproper position, the dooriamb 32 may be secured to the front uprightmembers '26 'by any suitable attaching means, such as screws or bolts.After the lining unit 311s in place, other portions of the cabinet maybe assembled on the structure. Thus, the outer casin which may includepanels of the character heretofore'described in the said application ofHenry P.

The framework may include vertical front cor- ,Braeutigam and WilliamC.'Holbrook may be ner angle irons 28, vertical rear corner angle; placedover the framework and suitable padding 38. The outer panels may includea front set of channel-like members 39, a side set of channelmembers 40,a rear panel 4| and a top 42. These panel members may besecured in placesubstantially as disclosed in the joint application of Henry P.Braeutigam and William C. Holbrook heretofore referred to, and for thispurpose the angle irons may be provided with inward recesses 43 forreceiving therein the joint structure 44. A finishing strip 45 may beplaced over the exposed edges of the lining 22 and panel members 39 inorder to give a finished appearance to the cabinet.

In the form shown in Fig. 6 the angle irons need not be provided withthe recesses 43. As there shown, the angle irons have straight edges,and if the outer panels are to be of the same construction, the paddingmembers 33a may be generally cross one or more angle irons or pieces. ofthe door jamb 32. Suitable notches may be provided in the angle ironsand the door jamb in order to accommodate the flanges 52 where the samecross the members as disclosed in the said joint application. However,the flanges 52 may be, shortened at these points in order that thean'gle irons or the door jamb need not have notches placed therein.

Another method of assembling the lining 22,

the insulation 34 and the box-like casing 35 may be used. Thus thebox-like casing 35 may'be placed with the side 35a on the bottom andwith the edge 35b at the top. A slab of insulating material may beplaced over the side 35a which slab would have its upper edge along theline 35c.

" The lining 22 may then be inserted in the boxlike casing 35 with itsdoor opening 33 upwardly disposed. Thereafter the slabs of insulationwhich would form the sides and the top and bottom of'the insulationcan-then be slipped in be tween the lining 22 and the casing 35. Theinsulation may then be rendered hermetically alrtight by pouring a layerof hydrolene or bituminamazes ous cement 38 while the casing 35 and thelining 22 are in the position with the door opening at the top.Thereafter the door jamb 32 may be placed over the layer of hydrolene 35while the layer of hydrolene is still in .a molten condition andthereafter lining 22 and the ox-like casing 35 may be secured to thedoor jam 32 as by nails shown dotted in Fig. or by any other suitablefastening means. While the form of embodiment of the invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow.

What is claimed is as follows:

1. A refrigerator cabinet comprising an outercabinet structure ofboxlike form, said outer structure having a compartment with a dooropening, and an inner insulating unit formed with a storage compartmentand having a door jamb for the door opening, said door opening leadingto said storage compartment and facing laterally when the cabinet is inits operative posi- I -tion, an end of said cabinet having an openingsufliciently large for insertion of said insulating unit into thefirst-mentioned compartment, said door opening being too small to permitlateral insertion of said insulating unit into the firstmentionedcompartment, and said outer cabinet structure having an anglei'acingplate one angle of which engages'said door jamb.

2. A refrigerator cabinet comprising cabinet structure of box-like form,said outer structure having a compartment with a door opening, and aninner insulating unit formed with a storage compartment and having adoor jamb for the door opening, said 'door opening leading to saidstorage compartment and facing laterally when the cabinet is in itsoperative position, the top of said cabinet having an opening,

an outer

